Two-cycle explosive-engine.



-H. H. NEWMAN.

TWO-CYCLE EXPLOSIVE ENGINE.

APPLICATION FILED AUQG. 12, 1912.

1,072,766, Patented Sept. 9.1913.

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'.rwo-cYCLE ExrLosIVn-'ENGIN-E.

Specification or Letters Patent. 'y

Patented Sept. 9, 1913.

Ammerlaan mea mgm 12, 1912. seria1N. ,v14,eza.

To aZZ 'wh-om t mcy concern:

Be i't known that I, HoA'Io H. NEWMAN, a citizen of the United States, residing at Sandersville, in the county of Washington and State or Georgia, have invented certain new and useful Improvements in Two- Cycle Explosive-Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains'to make and use the same.'

My invention relates to improvements in two-cycle explosive engines, and it consists in the constructions, combinations and arrangements herein described and claimed.

An object of my invention is to provide an improvedtwo-cycle explosive engine adapted to draw in a full charge of explosive mixture and to operate eliiciently under all practical conditions.`

further object of my invention is to provide a simple and practically noiseless two-cycle explosive engine in which all parts are readily accessible, and which insures the automatic lubrication of all moving parts.

- 4 sleeve per edge In the accompanying drawings forming a part of this application, in which like numerals designate like parts in all the views:

' Figure 1 is a vertical axial section illustrating one embodiment of my invention; and Figs. 2 and 3 are similar views on a reduced scale, showing the position of the parts during the exhaust and at the beginning of the admission, respectively.

Referring to the drawings, 1 indicates a water-cooled power cylinder'provided with an ignition device 2, and with inlet and exhaust ports 3 and 4, respectively; a sleeve 5 being slidably mounted in said cylinder 1, and provided with inlet and exhaust ports '6 and 7 adapted to coperate with the cor- -in.said "sleeve and provided with a AlowszT-Durin'g the entire powery stroke of' the' piston 8, the sleeve ports- 6 and 7 vare covered by said piston; the exhaust ports 11, 7, and 4 registering' at the completion. of the power stroke to permit a prompt exhaust of the products of combustion. During the continued outward movement of the power piston 8, the flange l0 thereof covers the sleeve p'o'rt 7, and the inclined upper cylinder edge uncovers the' sleeve port 6 whichv is then in registry with the cylinder inlet port 2.l Upon further cutwardfmovel ment of the power piston 8, the sleeve 5 is shifted by `its eccentric 12 to cover the cylinder exhaust lport 4; the ports 3 and 6 remaining in registry during the entire 'remaining outward movement of said piston 8. The displacement of the piston 8 and sleeve 5 in the cylinder insures the eiiicient drawing in of an explosive charge, which is also augmented by the contraction of the residual products of combustion due to the.

subtraction of heat therefrom by the watercooled cylinder walls; in this operation, the indrawn charge will be confined mainly within the 'relatively cool portion of the sleeve 5 which has not been subjected to the explosion temperature of the preceding charge. During the entire iii-stroke of the power piston 8, the latter coperates with the sleeve 5 to maintain the inlet and exhaust closed, and thel relatively-cool explosive mixture is compressed. Ignition then takes place, and the above steps are repeated. f

As shown in the drawings, the openended sleeve 5 is constructed to extend within the crank casing 15 during its outward stroke; thereby providing a simple and certain means for efficiently lubricating all of the moving parts by the splash system.

I have illustrated and described preferred and satisfactory constructions, but changes could be made within the spirit and scope of my invention.

I claim :1- l' 1. In a two-cycleexplosive engine, the combination of a power cylinder, sleeve .slidably' mounted in said cylinder, said sleeve and cylinder being provided with `cooperatingadmission and exhaust portslly a power piston reclpr'ocatingly mounted witlf't port coperating with the exhaust port of said sleeve, and means for reciprocating said sleeve vto coperate with said power piston for temporarily opening the exhaust after completion of the power portion of the out y stroke of said piston, for closing the exhaust and opening the admission upon further outward travel of said piston, and for maintaining the admission and exhaust closed during the entire in stroke of said piston.

2.'In a two-cycle explosive engine, the combination of a power cylinder, a sleeve slidably mounted therein, said cylinder and sleeve bein provided with coperating inlet and ex aust ports, a power piston reciprocatinly mounted Within said sleeve and provi ed with a port coperating With the exhaust port of said sleeve and With an inclined edge coperating with the inlet and exhaust ports of said sleeve, and means for reciprocating said sleeve.

coperating with the exhaust port of said sleeve, said flange having an inclined edge coperating with the inlet and exhaust ports of said s1eeve,and an eccentric on the engine shaft for actuating said sleeve. l

In testimony whereof, I aiix my signature, in presence of two witnesses.

HORATIO H. NEWMAN.

Witnesses:

R. C. HAR'rLEY, W. A. BELL. 

